Automatic safety pressure gauge for inflating tires



June 24, 1930. w, RICHARDSON 1,765,850

AUTOMATIC SAFETY PRESSURE GAUGE FOR INFLATING TIRES Filed Jan. 17, 1927 IN VEN TOR In order to unseat the stem of'the; valvelin 1111 is providedwith a recess indicatedf) to 1 catch and depress the valve stem. The

In order te'providea for bar 143' At "the end the cap jh'asthedependi ig per r "is pushed into iespllaee train the ifZQpf and its) L g a, v 0' V 'the'here 8.---imi1ar1-y' the ,twossides" 2 0 estanrlzslightlyawayfrem'theeastingiwhen ofgwhlfihthelie are fQur, ,nOtieeepartieularly I ov ectiwi-thi elongated; siettoffiiecfeive h and {be/are; against' the top ofithez'bap =g2Q I 6nd 3 said handle pretenting the to escape from the b0re 8, into the tube 12.

I lthe' -regulating' device, and: a small-'serew J i, V I M i e Ordlnar ly the arrangement. 1s such that ti vo depending sides '20" in'di tgd F about twenty pounds. 'ltQfflbOllt. one hundred: i 311a; etl-the'ibtottm" reach. of these" sides sf ,pr. videdilwith qan jinturnedylfiange V that it seatsthe Valve 16 properly 'ea eh tinie J igis; Ltnseated; Thejicap I '20,; it will :heis een,

' end l7is securedto 'theflcasting by means" of H 30 113Wv l7? Whigh .is screwed into the end it: is put into'place, butx when the screws.2S; 7 a h 1 small bore the'uother end 2,5a-iye 'insQei'ted; ;i11::p1ae?,j1;h two s larejbrought snugly int'q' i pfosition with he; i-tlanges got; jthe Qapifluiden a ifeversely V placed jflange f of; the casting." asuindicat ed'in gEi-gure 3 j thi pepticu'l ar'v construction being" ej 'pu'i'posesf bf "assemblyjpi 1 gauge; The Valve 16 is neeted tithe-bar lat? by" the in '14: .21 i h of; the "Opposite sides 1 of the cap "is n t a' he to. said saf ty] 5 ta'cfhable" fc up; high' said 's'aidibar; 610133 911 each} deii 0. 7 h 7 alleljwith said;- barthrQug whieh;.said lag t e op 10f i l-c piandsli the arms Ofthe slide 2li-,l:the"iohjeet' being eout ide oigthe cap mayfzbe' usedgte V ay-han ,V I 92 -f 1 4) heap-M5724 tgmeceive ithe 7 "S g .1251; findi-a m 2sfits lover: the-spring if it I" I l'lfhezrmoying qt; thezs'lide stow d ":er.' away i ilpon. 3 I 1 ing the stem passageti ayhy theiflange 6,3 and at thefsame time 'unseating the'I'nai'n H check valve 4. Thiswillfpermit airjto pass '4 through the passagewayv 8int0 the 'pneu--' matic tube; and when thegpi'essure -.in;th e pneumatic tube is higheenough, to unseat the safety valve 16, thatpressure beingjdeter-H mined-bythe plosition gatfwhich the :slide 21 'is pl'ac ed in accordance with the scale. on the I V 1 7' I outside of the sides ofthe. capQO, thesafety ivalvewilliblow 'ofi zindgijefthe'alarhi that the desiredpfe'ssu-re' hasb'een i'eachedwithin 7 ,theftube, Therwork nan ilhhof e0urse,.at ,7 Y once" release the" handle 31' and' f'remove the'f .01 irontthe stemleoi-the' pneumatic "tuhei r the pressure to begindieated,willfrunfffeir and twenty poundspensquaieinchlon'thei I gauge on the outside-' qf theisidesfxof the Havingthusdescribed my inventienwhat Ipdes'i-rerto secureghy'iLette -siPatenttot-the v United States; Iisia's fol lews; butv modificm tiens may-be madeinicartyingiout theing: ve' ntien assho'wn :inthe: digawings andain" 3i; 7 theeahoye particulalily' described zfi dr in there of, within the purview bf the a'nnexedi cla'; Y autemfitic safetylp'i'essuiie gauge cemja V prising an: elgengatedibasgkhkhiingl a *lon'gi tu a dineLboret'hefein; meeI St-o-admitl birll lde priessurehto said hotefatf he enc1;-the1ie0f{,fa5

hereoflfa valvefi'or said sm alli'boi'e; b"

other 1 end pivotedftq aidase,'.;a: said barg lateral; 2&EnlS 10 said; S 1i;de;. W asewadaptedjto eovei f-said cap pa ife' arins=-eXtenc-l.a :pos. V, 7 spring on said post ,a dapte to ear-against helfeemliaiidga scale nfthe'outside f'saidca a Keen said slots. a 

